Why are my teeth yellow?

Why are my teeth yellow

Yellow teeth usually come from surface stains, thinner enamel that shows more of the natural yellow dentin underneath, aging, or habits like coffee, tea, wine, and tobacco. Some discoloration is intrinsic—from medications, trauma, or developmental issues—and may respond poorly to standard whitening.

Extrinsic stains sit on or in the outer enamel and often lighten with bleaching or professional cleaning. As enamel wears or thins with age, the warmer dentin color shows through more, which can look yellow even when you brush well. Genetics, dry mouth, and certain antibiotics or excess fluoride during tooth formation can also affect shade. Matching the cause to the treatment avoids disappointment with bleach alone.

How long does teeth whitening last?

Can you whiten crowns or veneers?

Key Points

• Diet, smoking, and plaque buildup are common sources of yellow-brown surface stains.
• Aging and enamel wear can reveal yellower dentin that bleach only partly improves.
• Trauma, tetracycline staining, and some developmental conditions may need veneers or bonding.
• A dental cleaning can remove calculus stains whitening gel cannot fully dissolve.
• Uneven yellowing next to restorations may reflect material color, not poor brushing.

What This Means for You

Do not assume every yellow shade needs the same fix. Ask your dentist whether your discoloration is mainly stain, enamel thickness, or something structural. Extrinsic stains are the best whitening candidates; deeper or restorative mismatches may need a different cosmetic plan.

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